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Dissertations / Theses on the topic 'Natural surface water'

Author: Grafiati

Published: 3 June 2025

Last updated: 31 July 2025

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1

Picardo, Massimo. "Suspect screening of natural toxins in surface water reservoirs." Doctoral thesis, Universitat de Barcelona, 2021. http://hdl.handle.net/10803/670813.

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Natural toxins include a multitude of toxic secondary metabolites produced by animals, bacteria, fungi algae, and plants that are generally not intended as environmental contaminants of concern for water quality. However, the presence of anthropogenic waste in the aquatic environment, both with the climate changes and the increase of temperatures, is creating favorable conditions for the development of undesired organisms able to produce natural toxins that sum with other well known anthropogenic pollutants such as pesticides. Among them, natural toxins produced by algae (cyanotoxins), fung

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2

Miller, Penney Leigh. "Photochemical transformation of agricultural pesticides promoted by natural water constituents in wetland surface waters /." The Ohio State University, 2001. http://rave.ohiolink.edu/etdc/view?acc_num=osu1486399451961935.

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3

Brooks, Kristen Elise. "Comparing Reach Scale Hyporheic Exchange and Denitrification Induced by Instream Restoration Structures and Natural Streambed Morphology." Thesis, Virginia Tech, 2017. http://hdl.handle.net/10919/78326.

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A common water quality issue is an excess of nutrients which can lead to problems such as eutrophication. Stream restoration is one method by which improvements in water quality may be attempted. One strategy is increasing hyporheic zone flow at baseflow by addition of instream structures. The hyporheic zone can be an area of increased biogeochemical activity, with potential enhancement of reactions such as denitrification. However, the comparative effects of various instream restoration techniques, as well as the role of watershed setting and corresponding environmental characteristics in

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4

Muche, Muluken Eyayu. "Surface water hydrologic modeling using remote sensing data for natural and disturbed lands." Diss., Kansas State University, 2016. http://hdl.handle.net/2097/32609.

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Doctor of Philosophy<br>Department of Biological & Agricultural Engineering<br>Stacy L. Hutchinson<br>The Soil Conservation Service-Curve Number (SCS-CN) method is widely used to estimate direct runoff from rainfall events; however, the method does not account for the dynamic rainfall-runoff relationship. This study used back-calculated curve numbers (CNs) and Normalized Difference Vegetation Index (NDVI) to develop NDVI-based CNs (CN[subscript]NDV) using four small northeastern Kansas grassland watersheds with average areas of 1 km² and twelve years (2001–2012) of daily precipitation and runo

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5

Veron, Fabrice. "Turbulent mixing at the surface of natural water bodies : breaking waves and Langmuir circulations /." Diss., Connect to a 24 p. preview or request complete full text in PDF format. Access restricted to UC campuses, 2000. http://wwwlib.umi.com/cr/ucsd/fullcit?p3035438.

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6

Nowak, Katarzyna. "Carbon storage in free water surface constructed wetlands in southern Sweden." Thesis, Högskolan i Halmstad, Akademin för företagande, innovation och hållbarhet, 2021. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-45070.

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Background: Wetlands store significant amounts of carbon through plant respiration and anaerobic peat formation, however, there is little knowledge on which factors affect the carbon storage distribution within wetlands. Aims: To determine how much carbon and nitrogen wetlands can store over time and whether there are patterns of high and low carbon and nitrogen storage within wetlands. Methods: Peat samples of a defined volume, cut out from three constructed wetlands were dried, weighed and analysed for their carbon and nitrogen content. To determine whether there are any patterns in carbon a

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7

Cory, Neil. "Natural and anthropogenic influences on aluminium in the humic rich waters of northern Sweden /." Uppsala : Dept. of Environmental Assessment, Swedish University of Agricultural Sciences, 2006. http://epsilon.slu.se/200663.pdf.

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8

Köhler, Stephan. "Quantifying the role of natural organic acids on pH and buffering in Swedish surface waters /." Umeå : Swedish Univ. of Agricultural Sciences (Sveriges lantbruksuniv.), 1999. http://epsilon.slu.se/avh/1999/91-576-5626-6.pdf.

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9

Telci, Ilker Tonguc. "Optimal water quality management in surface water systems and energy recovery in water distribution networks." Diss., Georgia Institute of Technology, 2012. http://hdl.handle.net/1853/45861.

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Two of the most important environmental challenges in the 21st century are to protect the quality of fresh water resources and to utilize renewable energy sources to lower greenhouse gas emissions. This study contributes to the solution of the first challenge by providing methodologies for optimal design of real-time water quality monitoring systems and interpretation of data supplied by the monitoring system to identify potential pollution sources in river networks. In this study, the optimal river water quality monitoring network design aspect of the overall monitoring program is addressed b

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10

Waterman, Dillon A. "Bench-scale analysis of ultrafiltration membranes for investigating fouling by natural organic matter in surface water." Thesis, University of Ottawa (Canada), 2008. http://hdl.handle.net/10393/27741.

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Bench-scale systems, if properly designed, can become a valuable tool to evaluate fouling in dead-end ultrafiltration systems. The purpose of this study was to design and build a bench-scale hollow fiber ultrafiltration system to examine the effect of operational parameters and chemical pretreatment on membrane performance. For this research, a bench-scale hollow fiber ultrafiltration system that operates at constant flux and includes a backwash cycle was designed and built. The system was also designed to be used as a tool in the evaluation of critical flux for source waters. The study demons

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11

Kaldenbach, Felix [Verfasser]. "Natural and artificial lateral lines : Form-function relationship and detection of water surface waves / Felix Kaldenbach." Bonn : Universitäts- und Landesbibliothek Bonn, 2016. http://d-nb.info/1159955123/34.

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12

Klaiber, Laura B. "Edge-Of-Field Water And Phosphorus Losses In Surface And Subsurface Agricultural Runoff." ScholarWorks @ UVM, 2016. http://scholarworks.uvm.edu/graddis/565.

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Quantifying effectiveness of soil management practices on surface and subsurface water quality at the field scale is becoming increasingly important in the Lake Champlain Basin and other agricultural watersheds. During 2012 and 2013, field plots (22.9 x 45.7 m) were established at the Lake Alice Wildlife Area in Chazy, NY to begin a long-term water quality monitoring study. Plots were established in a cool season grass field (1 ha) leased and managed by the William H. Miner Agricultural Research Institute in Chazy, NY. The soil type transitions from an excessively drained outwash soil on the u

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13

Ståhlberg, Carina. "Mineralisation rates of natural organic matter in surface sediments affected by physical forces." Licentiate thesis, Linköping University, Linköping University, Department of Water and Environmental Studies, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-8332.

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<p>Nedbrytning av organiskt material är en nyckelfaktor som påverkar omvandlingar av de många grundämnen som utgör eller är associerade till just organiskt material. En stor del av nedbrytningen av akvatiskt organiskt material (OM) sker i gränsskiktet mellan sediment och vatten. Eftersom så många biogeokemiska cykler styrs av nedbrytningen av OM är det viktigt att ha kunskap om processer och påverkansfaktorer både på mikro- och makronivå. Mineraliseringshastigheten av OM är en vanligt förekommande mätparameter, men vanligtvis inkluderar mätningarna inte de naturliga processer som kan påverka n

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14

McNeil, Vivienne Heather. "Assessment methodologies for very large, irregularly collected water quality data sets with special reference to the natural waters of Queensland." Thesis, Queensland University of Technology, 2001.

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15

Doliber, Sarah Rebecca. "Groundwater Surface Trends in the North Florence Dunal Aquifer, Oregon Coast, USA." PDXScholar, 2012. https://pdxscholar.library.pdx.edu/open_access_etds/530.

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The North Florence Dunal Aquifer is the only feasible source for drinking water for the coastal city of Florence, Oregon and Florence's Urban Growth Boundary. High infiltration rates and a shallow groundwater table leave the aquifer highly susceptible to contamination from septic tank effluent, storm runoff, chemical fertilizers and recreational ATV use throughout the dunes. Public interest in the quality and quantity of the aquifer water has been sparked since the City of Florence received a grant from the Environmental Protection Agency for a watershed protection and restoration project. Del

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16

Gao, Yuan. "Ultrasonic Control of Ultrafiltration Membrane Fouling by Surface Water: Effects of Calcium, pH, Ionic Strength and Natural Organic Matter (NOM) Fractions." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1285123886.

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17

Júlio, Maria de Fátima de Jesus Leal. "Carbon key-properties for microcystin adsorption in drinking water treatment: structure or surface chemistry?" Master's thesis, Faculdade de Ciências e Tecnologia, 2011. http://hdl.handle.net/10362/7066.

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Dissertação para Obtenção de Grau de Mestre em Engenharia Química e Bioquímica<br>The carbon key-properties (structure and surface chemistry) for microcystin-LR (MC-LR) adsorption onto activated carbon were investigated. Waters with an inorganic background matrix approaching that of the soft natural water (2.5 mM ionic strength) were used. Also, model waters with controlled ionic make-up and NOM surrogate with similar size of MC-LR (tannic acid - TA) with MC-LR extracts were tested with activated carbon NORIT 0.8 SUPRA. For this AC, two particle sizes, 125-180 μm and 63-90 μm were tested. The

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18

Salgado-Herrera, Miriam. "Characterization of Bacteria Community and Evaluation of Anthropogenic and Natural Disturbances in Surface Waters Quality of Sabana River in the Luquillo Experimental Forest in Puerto Rico." Thesis, Universidad del Turabo (Puerto Rico), 2018. http://pqdtopen.proquest.com/#viewpdf?dispub=10285300.

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<p> Characterization of bacteria community and evaluation of anthropogenic and natural disturbances in surface waters quality of Sabana River in the Luquillo Experimental Forest in Puerto Rico. This doctoral dissertation research focused on the bacterial characterization, and evaluation of anthropogenic, and natural disturbances in the surface waters quality of the Sabana River in the Luquillo Experimental Forest in Puerto Rico. Monthly samples were taken at seven stations along the river during one year, and physicochemical factors such as temperature, pH, conductivity, DO and salinity were m

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19

Weatherill, John James. "Investigating the natural attenuation and fate of a trichloroethene plume at the groundwater-surface water interface of a UK lowland river." Thesis, Keele University, 2015. http://eprints.keele.ac.uk/2339/.

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Legacy industrial contaminants, such as trichloroethene (TCE), that have been released to aquifers in the last century, now threaten the quality of groundwater baseflow to lowland rivers and streams. Before reaching these receptors, contaminant plumes must first transit the heterogeneous environment of the aquifer-river interface. This research investigates the fate and potential for in-situ natural attenuation at this interface where a poorly-defined TCE plume potentially threatens a ‘gaining’ lowland river in the UK. It was possible to reveal a well-defined discharge zone of the plume in the

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20

Bartlett, Joseph Hollis. "Impacts of Transportation Infrastructure on Stormwater and Surface Waters in Chittenden County, Vermont, USA." ScholarWorks @ UVM, 2016. http://scholarworks.uvm.edu/graddis/426.

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Transportation infrastructure is a major source of stormwater runoff that can alter hydrology and contribute significant loading of nutrients, sediment, and other pollutants to surface waters. These increased loads can contribute to impairment of streams in developed areas and ultimately to Lake Champlain. In this study we selected six watersheds that represent a range of road types (gravel and paved) and road densities (rural, suburban, and urban) present in Chittenden County, one of the most developed areas in Vermont. The location and density of road networks were characterized and quantifi

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21

Quinlivan, Patricia Ann. "EFFECTS OF ACTIVATED CARBON SURFACE CHEMISTRY AND PORE STRUCTURE ON THE ADSORPTION OF METHYL TERTIARY-BUTYL ETHER AND TRICHLOROETHENE FROM NATURAL WATER." NCSU, 2001. http://www.lib.ncsu.edu/theses/available/etd-20010711-170529.

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<p>Activated carbon adsorption is the best available treatment technology for thecontrol of many objectionable trace organic compounds. Activated carbons are frequentlycharacterized by the iodine number and BET surface area, but these parameters do notcorrelate well with trace organic compound removal from natural water. Therefore, theobjective of this research was to develop activated carbon selection criteria that assure theeffective removal of trace organic contaminants from natural water and to base theselection criteria on the adsorbent?s pore structure and surface chemistry. Tosystematic

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22

Pringle, Keara Louise. "An Internship with the Ohio Environmental Protection Agency, Division of Surface Water: Understanding the Vegetation and Soil Conditions in Natural Riparian Forests." Miami University / OhioLINK, 2017. http://rave.ohiolink.edu/etdc/view?acc_num=miami149333522985015.

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23

Kus, Hülya. "Long-term performance of water repellants on rendered autoclaved aerated concrete." Doctoral thesis, KTH, Civil and Architectural Engineering, 2002. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3407.

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<p>Many failures of external walls made of porous buildingmaterials are caused by excessive moisture content,particularly after driving rain and under long duration ofmoist conditions. Lack of sufficient protection againstexposure conditions is one of the reasons for external wallsprematurely demonstrating failures, i.e. properties andperformance above/below critical levels. Silicon-based waterrepellants are increasingly used in order to improve theperformance of both old and new buildings. Water repellants areexpected to prolong the service life and improve the durabilityof wall components by

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24

Bose, Sweta. "Dissolution Kinetics of Sulfate Minerals: Linking Environmental Significance of Mineral-Water Interface Reactions to the Retention of Aqueous CrO₄^2- in Natural Waters." Wright State University / OhioLINK, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=wright1207285064.

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25

Ståhlberg, Carina. "Mineralisation rates of natural organic matter in surface sediments affected by physical forces : a study of fresh- and brackish-water sediments subjected to changed redox conditions, resuspension, and advective pore water flow /." Linköping : Department of Water and Environmental Studies, [The Tema Institute], Linköping University, 2006. http://urn.kb.se/resolve?urn=urn:nbn:se:liu:diva-8332.

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26

Castada, Hardy Zingalaoa. "Brewster Angle Microscopy Study of Model Lung Surfactant Systems at the Air-Water and Air-Physiological Buffer Interfaces." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1281642097.

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27

Gudmundsson, Kjartan. "Alternative methods for analysing moisture transport in buildings : Utilisation of tracer gas and natural stable isotopes." Doctoral thesis, KTH, Byggvetenskap, 2003. http://urn.kb.se/resolve?urn=urn:nbn:se:kth:diva-3509.

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New methods, based on tracer gas measurements and isotopicanalysis can be used to evaluate the moisture properties ofbuilding materials and provide the means for forensic analysisof the origins and history of excessive water in buildings, theimmediate practical consequences of which will be the abilityto improve the moisture performance of constructions. It is shown, in theory and through measurements how thewater vapour permeability of porous building materials can witha good degree of accuracy be estimated with tracer gasmeasurements that provide an efficient alternative to the cupmethod. Co

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28

Govinder, Kuvendran. "Theoretical analyses and design, construction and testing of a flow loop for the study of generalised forced and natural convection boiling heat transfer phenomena on typical light-water nuclear reactor fuel pin configurations." Diss., University of Pretoria, 2019. http://hdl.handle.net/2263/71554.

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In a worldwide pursuit for more Accident Tolerant nuclear Fuel (ATF), the quest to obtain and certify alternative nuclear fuel cladding tubes for light-water nuclear power reactors is still a key challenge. One of the facets in this program to develop more ATF is the heat transfer evaluation between the various proposed clad tubes manufactured from suitable replacement materials and the current problematic zirconium-alloy based clad tubes used in nuclear power reactors. For the heat transfer analysis, the accurate measurement of the temperature on the heat transfer surface of heated tubes to b

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29

Pourrier, Jonathan. "Caractérisation des processus de transferts et d’interactions entre les compartiments hydrologiques, hydrogéologiques et cryosphériques d’un bassin versant andin semi-aride soumis à une forte variabilité climatique (Vallée de l’Elqui – Chili)." Thesis, Montpellier 2, 2014. http://www.theses.fr/2014MON20108/document.

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Le nord du Chili est soumis à un contexte climatique aride à semi-aride présentant une variabilité saisonnière et inter-annuelle forte. Dans cette région les zones de haute altitude soutiennent les parties plus basses des bassins versants, mais la ressource en eau reste malgré tout limitée. Afin d'améliorer les méthodes de gestion de l'eau dans ces bassins versants, il est important de préciser le rôle des zones de haute altitude dans le soutien des parties basses, mais aussi de caractériser les modalités de transfert et d'interaction entre les compartiments constitutifs de l'hydrosystème. Ce

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30

Gardner, Brian. "Atmospheric deposition of polycyclic aromatic hydrocarbons to natural water surfaces." Thesis, Lancaster University, 1992. http://ethos.bl.uk/OrderDetails.do?uin=uk.bl.ethos.359936.

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31

Buzulencia, Hayley Catherine. "THE CHARACTERIZATION AND SURVEY OF INORGANIC SULFUR REDOX ASSOCIATED WITH WETLAND HYDROLOGICAL FLUCTUATIONS." Kent State University / OhioLINK, 2019. http://rave.ohiolink.edu/etdc/view?acc_num=kent1574288446961206.

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32

Івченко, Вікторія Дмитрівна, Виктория Дмитриевна Ивченко та Viktoriia Dmytrivna Ivchenko. "Очищення стічних і поверхневих вод від іонів амонію та феруму глинистими мінералами Сумської області". Thesis, Вид-во СумДУ, 2012. http://essuir.sumdu.edu.ua/handle/123456789/27702.

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Екологічно безпечне водокористування передбачає збалансований вплив господарської діяльності людини на стан водних ресурсів з метою мінімізації втручання в природні процеси розвитку водних екосистем. Проблеми, пов’язані із впровадженням нових технологій з метою раціонального використання водних ресурсів та очищення стічних вод, є без сумніву надзвичайно актуальними. При цитуванні документа, використовуйте посилання http://essuir.sumdu.edu.ua/handle/123456789/27702

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33

Oluju, Philemon. "Literature Review of the impacts of riparian vegetation on stream chemistry." Thesis, Högskolan i Halmstad, Akademin för ekonomi, teknik och naturvetenskap, 2017. http://urn.kb.se/resolve?urn=urn:nbn:se:hh:diva-35206.

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Water quality in streams around the world continues to be degraded by a series of human activities that feed pollutants into the vulnerable stream ecosystem via surface and subsurface runoff. This continues to accelerate global biodiversity and habitat losses within the stream environments and across entire watersheds with net adverse effects on public health and the ability of communities and ecosystems to adapt or become resilient to the prevalent impacts of climate change. One commonly used approach for protecting stream water from pollution is the use of vegetated riparian buffer zones to

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34

Orr, Olivia B. "The characterization, isolation, and fractionation of natural organic matter from three surface waters." Connect to this title online, 2009. http://etd.lib.clemson.edu/documents/1252424810/.

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35

Roe, Jessie Louise. "Characterising natural organic matter in surface waters and the minimisation of disinfection by-product formation." Thesis, University of Birmingham, 2011. http://etheses.bham.ac.uk//id/eprint/2980/.

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Modern water treatment processes are necessary to create an adequate and continuous supply of water that meets regulatory standards. The presence of natural organic matter (NOM) in water courses impacts negatively upon aesthetic and chemical standards and as such requires removal during water treatment processes. Variable structural composition and sources of NOM denote that high NOM removal efficiencies are rarely achieved at conventional water treatment works (WTW). Poor removal of NOM can result in biofilm re-growth in distribution systems and the formation of potentially carcinogenic disin

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36

Zhang, Yuhai. "Épuration naturelle : de la rivière à la zone humide de rejet." Thesis, Université de Lorraine, 2014. http://www.theses.fr/2014LORR0302/document.

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Cette thèse s’est déroulée dans le cadre du projet EPEC (Epuration en Eau Courante) soutenu par le programme ECOTECH 2010 de l’ANR. Ce projet doit permettre d’aider à répondre aux exigences de la Directive Cadre sur l’Eau pour les petits cours d’eau en zone rurale. Deux voies ont été explorées i) la première vise à étudier et à proposer des moyens d’améliorer la capacité d’épuration au sein de systèmes naturels, en s’appuyant sur des observations réalisées sur deux cours d’eau en Lorraine (Brénon et St-Oger) ii) la seconde concerne la réduction des impacts sur le milieu récepteur des rejets de

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37

Torres, Luisa Fernanda. "Holistic Risk Assessment of Surface Water Contamination by Naturally Occurring Radioactive Material in Oil Produced Water from the Bakken Shale." Thesis, North Dakota State University, 2016. https://hdl.handle.net/10365/28216.

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The risks to the environment and human health due to hydraulic fracturing (HF) in onshore unconventional oil and gas (O&G) development have been studied in the past but results are inconclusive. A common shortcoming in previous studies is the absence of social risk perception and awareness analysis. This thesis research proposes the combination of statistical methods to analyze risks to human health due to improper management of produced water, the major by-product of HF. This study focuses on the Bakken Shale located in North Dakota. A risk assessment of radium-226 was performed from a techni

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38

Abu-Lail, Laila I. "An atomic force microscopy study of bacterial adhesion to natural organic matter-coated surfaces in the environment." Link to electronic thesis, 2006. http://www.wpi.edu/Pubs/ETD/Available/etd-050206-163823/.

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39

Hwang, Yu Sik. "Adsorption Of Naturally-Occurring Dicarboxylic Acids At The Hematite/Water Interface." The Ohio State University, 2008. http://rave.ohiolink.edu/etdc/view?acc_num=osu1226256959.

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40

Villines, Jonathan A. "USING GIS TO DELINEATE HEADWATER STREAM ORIGINS IN THE APPALACHIAN COAL-BELT REGION OF KENTUCKY." UKnowledge, 2013. http://uknowledge.uky.edu/bae_etds/15.

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Human activity such as surface mining can have substantial impacts on the natural environment. Performing a Cumulative Hydrologic Impact Assessment (CHIA) of such impacts on surface water systems requires knowing the location and extent of these impacted streams. The Jurisdictional Determination (JD) of a stream’s protected status under the Clean Water Act (CWA) involves locating and classifying streams according to their flow regime: ephemeral, intermittent, or perennial. Due to their often remote locations and small size, taking a field inventory of headwater streams for surface mining permi

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Ward, Collin P. "Direct and Indirect Photochemical Degradation of Two Polycyclic Musk Fragrances and Two Polycyclic Aromatic Hydrocarbons in Natural Waters." The Ohio State University, 2010. http://rave.ohiolink.edu/etdc/view?acc_num=osu1275577426.

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42

Griffiths, Joshua William. "The nature of remotely-sensed surface turbidity in U.K. and Atlantic French Waters." Thesis, Bangor University, 2016. https://research.bangor.ac.uk/portal/en/theses/the-nature-of-remotelysensed-surface-turbidity-in-uk-and-atlantic-french-waters(b0b01a3f-54f1-432e-acb2-8d52944bea05).html.

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Mineral suspended solids are a strong source of ackscattered light within coastal shelf seas. Backscattered light has a direct relationship to remotely-sensed reflectance, measured by satellites. For four decades, remote-sensing algorithms have been used to estimate the concentration of suspended particulate matter (SPM). Present algorithms for SPMassume that the mass-specific backscattering coefficient (b⇤bp(667nm) = bbp(667nm)/SPM) is constant. Chapter III aimed to explore how observations of the influence of particle compositon upon backscattering could be incorporated into remote-sensing a

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43

Croué, Jean-Philippe. "Contribution a l'etude de l'oxydation par le chlore et l'ozone d'acides fulviques naturels extraits d'eaux de surface." Poitiers, 1987. http://www.theses.fr/1987POIT2289.

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44

McEwen, Amiana Marie. "Abundance, Distribution, and Geometry of Naturally Occurring Macropores in Stream Banks." Thesis, Virginia Tech, 2018. http://hdl.handle.net/10919/95948.

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Preferential flow paths are areas of substantially higher permeability than surrounding media. Macropores and soil pipes are a type of preferential flow path where conduit-like voids in the subsurface are typically greater than three millimeters in diameter. They are known to occur in agricultural and forest soils, often as a result of biological and physical processes. Macropores also exist in stream banks and have the potential to enhance the exchange of water and solutes between the channel and riparian groundwater, yet the geographic distribution of bank macropores is unknown. Here we dete

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Rai, Nacer-Eddine. "Analyse et prévision de certains glissements de terrains naturels." Phd thesis, Grenoble 1, 1992. http://tel.archives-ouvertes.fr/tel-00682856.

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L'objectif principal de ce travail est de mettre à la disposition des pouvoirs publics un outil de prévision des glissements de terrains naturels, pour leur permettre de prendre les décisions qui s'imposent au bon moment. Vu les incertitudes qui pèsent sur l'analyse a priori des phénomènes d'instabilité et l'imprécision de la cinématique des mouvements, il est nécessaire de pouvoir déterminer, chaque fois qu'il y a risque de mptme d'un ouvrage ou d'un site naturel, une frontière critique dans l'espace des paramètres définissant l'équilibre des masses potentiellement instables. Parmi les paramè

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Caporuscio, Elizabeth. "EVALUATION OF A SEQUENTIAL POND SYSTEM FOR DETENTION AND TREATMENT OF RUNOFF AT SKYPARK, SANTA'S VILLAGE." CSUSB ScholarWorks, 2018. https://scholarworks.lib.csusb.edu/etd/773.

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Understanding the extent to which human activities impact surface water resources has become increasingly important as both human population growth and related landscape changes impact water quality and quantity across varying geographical scales. Skypark, Santa’s Village is a 233.76-acre tourism-based outdoor recreation area located in Skyforest, California residing within the San Bernardino National Forest. The park is situated at Hooks Creek, the headwaters of the Mojave River Watershed, and is characterized by a diverse landscape that includes forest cover and human development, including

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Theunissen, Brendon Richard. "Removal of organic colour from natural surface waters by coagulation and floc blanket clarification, with an investigation of the effects of the addition of Kaolin as a process aid." Master's thesis, University of Cape Town, 2001. http://hdl.handle.net/11427/4998.

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Includes bibliographical references.<br>This dissertation presents a review of relevant literatre to provide a foundational understanding of the concepts, principles, processes and mechanisms involeved firstly in the coagulation of organic colour, and secondly in floc blanket clarification. The dissertation then presents an investigation of the effect of the addition of clay-kaolin-as a process aid, in floc blanket clarification of South African organically coloured natural surface waters.

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TEIXEIRA, LUIZ F. L. "Determinação dos radionuclídeos naturais urânio e tório nos sedimentos superficiais do sistema Cananéia - Iguape." reponame:Repositório Institucional do IPEN, 2017. http://repositorio.ipen.br:8080/xmlui/handle/123456789/28049.

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Submitted by Pedro Silva Filho (pfsilva@ipen.br) on 2017-11-23T11:02:37Z No. of bitstreams: 0<br>Made available in DSpace on 2017-11-23T11:02:37Z (GMT). No. of bitstreams: 0<br>O sistema Cananéia-Iguape é um grande complexo de canais lagunares e estuarinos, localizado no sul do estado de São Paulo. Este sistema passou a receber as águas do rio Ribeira de Iguape após a abertura do canal do Valo Grande, finalizado no ano de 1852. Este canal tornou-se a principal rota de transporte das produções da região do Vale do Ribeira, e nas décadas de 1940 a 1990 as atividades de mineração da região conta

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Barjot, Guillaume. "Adaptation d’une méthode de cartographie à score pour la gestion distribuée des aires de production du ruissellement en milieux urbains." Electronic Thesis or Diss., Université Grenoble Alpes, 2024. http://www.theses.fr/2024GRALU020.

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En France, la gestion des inondations par ruissellement représente un défi majeur pour les collectivités, exacerbé par les impacts du changement climatique et l'urbanisation. Le modèle ORus, développé dans le cadre de ce travail, vise à fournir un outil opérationnel pour l'aménagement du territoire et la réduction de la vulnérabilité face à ce phénomène, en tenant compte des spécificités des zones urbaines et périurbaines. ORus repose sur une analyse approfondie du ruissellement, intégrant l'influence de l'urbanisation sur la production et l'accumulation du ruissellement. Il utilise également

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Cakir, Roxelane. "Les fonctions écologiques de régulation des nitrates au sein des bassins versants : des cours d'eau aux territoires." Thesis, Toulouse 3, 2020. http://www.theses.fr/2020TOU30115.

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Le maintien de la qualité des eaux de surface au sein des bassins versants est un enjeu pour la société et les écosystèmes. Ce maintien est en partie assuré par la régulation de la qualité de l'eau, encore trop peu étudiée. Comprendre cette régulation faciliterait la détermination de l'impact anthropique et des zones à préserver, en conséquence, une gestion de la ressource optimale. Si l'on considère les nitrates comme indicateur de la qualité de l'eau, ces derniers sont apportés en quantité importante par les activités agricoles, les rejets urbains et industriels. La régulation est assurée pa

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